Introduce boot.js: this finally makes it possible to load and run Todomvc

example/todomvc/test/todomvc_mainpage2_test.html

Index: example/todomvc/test/todomvc_mainpage2_test.html
diff --git a/example/todomvc/test/todomvc_mainpage2_test.html b/example/todomvc/test/todomvc_mainpage2_test.html
index 9706f04907829262d08c582f84d8ae1387d7d235..5ac7b5729e293d5f492a12bcdc959a90a307ced6 100644
--- a/example/todomvc/test/todomvc_mainpage2_test.html
+++ b/example/todomvc/test/todomvc_mainpage2_test.html
@@ -31,7 +31,6 @@ main() {
 
   Timer.run(() {
     appModel.todos.add(new Todo('hola'));
-    deliverChangeRecords();
     // TODO(sigmund): investigate why is not enough to do Timer.run
     new Timer(new Duration(milliseconds: 200),
         () => window.postMessage('done', '*'));